MailBee.NET Security
MailBee.NET Security components enable .NET applications to sign, verify, encrypt, decrypt e-mails, work with DomainKeys/DKIM, S/MIME, SSL/TLS, public and private certificates (including PFX), use MailBee.NET SMTP/POP3/IMAP components to connect to secure mail servers (like Gmail) in both dedicated and STARTTLS modes, use impersonation. DomainKeys/DKIM and SSL/TLS is available at no additional cost. Royalty-free distribution.